Automatic heat control for radiators



Jan. 20, 1931. w. E. RoYs AUTOMATIC HEAT CONTROL FOR RADIATORS Filed April 25. 1928 nude o:

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Patented Jan. 20, 1931 PATENT OFFICE WILLIS E. BOYS, BROOKLYN, NEW YORK AUTOMATIC HEAT CONTROL FOR RADIATORS Application filed April 23, 1928. Serial No. 272,013. V

This invention relates to automatic heat controls for radiators.

The main object of this invention is the provision of an improved thermostatic heat control for radiators.

A supplemental object of this invention is to provide a device of the character descrlbed, wherein improved means permits an automatic heat control of the nature specified to be set to any temperature, regardless of whether the heat control is used in residences, apartment houses, private offices, and the like, where varying conditions may be required, or schools, or ofiice or public buildings or hotels where a fixed temperature is observed.

Another object of the invention is to provide an improved device of the nature set forth which may assume the form of a knob that embodies the constructional adjustment details herein involved.

A further ob'ect of the invention is the provision of an ad ustment knob of the character set forth which may be made in different forms, including particularly a ratchet type 26 for use indwellings, and the like, and a look ing type for use in public buildings andsimilar places as above specified, the saidknob being simple in construction, inexpensive of manufacture, and et'ficient, nevertheless, to a .30 high degree in use.

Other objects and advantages of the invention will become apparent as the specification proceeds. a

lVith the aforesaid objects 'in view, the inp vention consists in the novel combinations and arrangements of parts hereinafter described in their preferred embodiments, pointed out in the subjoined claims, and illustrated on the annexed drawing, wherein. like parts are des- 4 ignated by the same reference characters throughout the several views.

In the drawing: V

Figure 1 is a sectional side elevation of my improvement in the ratchet form, and showw ing the application thereof.-

notes a device embodying the invention.

- position (as shown) or at the bottom thereof Fig. 2 is a similar fragmentary view showing the locking type of knob.

Fig. 3 is vertical section take-ii on the line 33 of Fig. 1. I

Fig. 4 is a front elevation ofan embodiment of the invention applied to a steam radiator.

Fig. 5 is an enlarged sectional view of a detail of invention.

6 is an enlarged fragmentary view of a detail of invention. a

This invention constitutes an'im'provement on the automatic heat regulator for radiators more particularly; hown and described in my Patent No. 1,522,981.

' The advantages of the invention as here outlined are best realized when all of its features. and instrumentalities are combined in one and the same structure, but, useful devices may be produced embodying less than thewhole. I It will be obvious to those skilled in the art to. which the. invention appertains,that the same may be incorporated in several different constructions"; Theaccompanying drawing, therefore, submitted merely as showing the preferred exemplification of the invention. Y

Referring in detail to the drawing, 10 de- The same includes a heat control 11, adapted to be'mounted in. the steam supply line 12 of a conventionalradiator 14, in either top according to the necessaryrconditions.

The control 11 may be described, generally, as includingthermostats 15 and 15a which are horizontally aliiied in 'positionto actuate a valve 16 in the steam line 12. 'A cage 17 surrounds the thermostats and the auxiliary mechanism and insulating members. The said cage is secured to a flange 18 of the said valve, and is provided at its other endwith a perforat dplate 19, t0 whichen adjusting means may be secured, for setting the heat control.

Taking around the stem of the valve 16, is a flexible bellows 21, having at one end a metal plate 22, faced with a strip of cork insulation 23. V Secured in any suitable manner to the insulation 23, as by cement, or

fasteners, is a disc 24. Coacting therewith is similar disc 25, and these are in parallel spaced relation with one another, being so retained by cork spacers 26, through which pass the fasteners 27. The discs 24, are made of any suitable material to prevent radiation of heat from radiator 14 or valve 16 on the thermostats, so that the latter may more readily r spond to changes in room temperature. o j

Improved means 28 is provided for stat 15a is secured to disc 25, and the thermostat 15 to 15a. 7

The adjusting means 20 comprises a stationary circular member 33 secured to the plate 19 in any suitable manner at 34. An inward extending flange 35 is grooved transversely to slidably receive the ridges 36 of the hub 37. The latter is fixedly secured to a side of the thermostat 15 in coaxial relation therewith and extends centrally into the body 33. Preferably, the said hub is threaded into the thermostat as shown at 38. At its other end, the said body is internally flanged at 39 and rabbeted at 40 to receive an annular shoulder 41 of a screw 42. This screw is threaded centrally into the hub 37 as shown at 43, and with respect to which it is rotatable. The said ridges are preferably three in number.

A knob 44 is externally mounted on the body 33, the latter being received within the cylindricalwall 45 of the former, which wall extends into proximity to the plate 19. A vertical wall portion 46 of the knob has a central opening 47 into which projects the adjacent end 48 of the adjusting screw 42. Communicating in alinement with the aforesaid opening. is a hole 49 tlirough which extendsa screw 50, or other fastening, which is threaded into the portion/48.

Coacting with the knob 44 and the mounting 33, is a'lock structure 51. The same includes a fiat spring 52 seating in a recess 53 in the front face of the knob, which spring is clamped fixedly to the knob by the screw 50.

parallelism with the axis thereof. The end of the detent is selectively received in one of a plurality of recesses 55 which are equally spaced from the said axis. A projection or point 56 on the knob 44 may indicate the position thereon for a given temperature.

The operation of the device will now be clearly apparent. On turning the knob 44, the pin 54 leaves its coacting recess and moves outward, the spring 52 being caused to deflect. On engaging another recess, the knob is again temporarily locked and may be permitted to so remain. The spacing between the rec sses may be so determined as to afford a required-or convenient difference in temperature in shifting from one to another. Thethread on adjusting screw 42 is preferably of a quadruple character so that a slight turn of the knob 44 may cause a suiiicient movement ofthe hub member 37 whether inward or outward, to set the thermostats 15 and 15a to operate valve 16 for permitting the required amount of steam to pass therethrough to radiator 14.

In Fig. 2 is shown a modification of the invention wherein the pin 54 is replaced by a screw 57 threaded through the end wall 58 of the knob 59. The end of the screw extends into a recess 60 in the flange 61 of the mounting body 62. The head of the screw 57 may seat in a depression 63 in the said end wallj58. QA fiat spring or plate 64 clamped in place inthe recess 65 of the knob overlies and conceals the head of the screw 57. 7

It is thus seen that I have provided a device which fulfills the several objects of the invention and is well adapted to meet the conditions of practicaluse.

I claim:

1. A device of the character described, including a valve, a bodily movable thermostat to operate the valve, a casing for the thermostat, a stationary sleeve having inwardly offset portions directly engaging the casing to 'hold the sleeve in axial alinemen-t with the thermostat, a knob mounted onthe sleeve, a

"screw threaded device in axial alinement with the sleeve and movably guided by said offset portions. said screw threaded device having a member coacting with the offset portionsto be retained thereby against rotation, said screw threaded device coacting with the thermostat. and being actuatedby the knob to serum thermostat for any desired temperature, said sleeve and said screw threaded device being positioned interiorly of the knob. 1

2. A device of the character described, in-

cluding a valve, fa bodily movable thermo stat to operate the valve, a casing for the thermostat, a stationary sleeve alined with they thermostat, said sleeve having an edge "portion oflset toward the interior of the A pm or detent 54 secured to an end of the 1 spring extendsinwardthrough knob 44 in sleeve and forming an outer peripheral groove 1n the sleeve, saldcasmg havlng an opening to rigidly engage the sleeve in the groove, said portion having a plurality of opposite axially extending guide notches opening inward into the sleeve, a member centrally fixed to the thermostat and extending axially into the sleeve, said member having longitudinal guides slidingly engaging in the guide notches, an axial screw in the sleeve, said screw being fixed in the sleeve against longitudinal movement and having loose threaded engagement W1th said member to move the latter axially, and a knob on the sleeve connected to the screw.

In testimony whereof I aflix my signature. WVILLIS E. BOYS. 

